Dermot Mark Durcan made a sizable open-market buy of Cencora, Inc. shares on June 18, 2026, purchasing 4,000 shares at $274.19 each for a total of about $1.10 million. Open-market purchases are often watched closely because they involve an insider using personal funds to increase exposure to the company, unlike option exercises or stock grants that can occur for compensation-related reasons. Durcan is listed as an insider, meaning he has access to non-public information and is typically a senior executive or director. While insider buying does not guarantee anything about business performance, a purchase of this size can be meaningful because it represents a voluntary commitment of capital at the current market price. The filing indicates the transaction was not made under a pre-scheduled 10b5-1 plan, which can make the timing more notable since it appears to be a discretionary decision. In the past 30 days, the only reported insider activity at COR is this purchase. The trade also follows a similarly sized buy of roughly $1.07 million on May 28, 2026, pointing to repeated buying rather than a one-off transaction.